Organic iodin preparation.



45 of the reaction is 'poured into water and the mixture is UNITED ST urns EMIL FIso E or BERLIN, GERMANY, inssisuon TO FARBENFABRIKEN yonM. FRIEDR; BAYER & 00.,- or ELBERELYLD, GERMANY; A oonronarrou OF GERMANY.

oneamo pm PREPARATION.

y are. 858,446.

To all whom it may concern:

Be it known that I, EMIL FIso -nsn, professor of-chemistry,- a citizen of the German Empire, residing at Berlin, Germany, Kingdom of Prussia, have invented new and F useful Improvements in Organic Iodin Preparations,' of which the following is a specification. I

My invention relates to the production of the hitherto unknown esters of the. mono'iodin/ substituted derivatives of high-molecular fatty acids whichcan. be ob- 1 0 tained by esterification of the monoiodin derivatives of high-molecular fatty acids. The new esters are stable pure iodin preparations. They give off iodin ,in

the organism and have proved tobe valuable remedies .in medicine, especially for the treatment of venereal diseases, They are specially suitable for subcutaneous use in view oi their neutral reaction and absence .of ir ritation. For-subcutaneous injections from 2 to 10 grains will serve for a single dose. Clinical experience has shown that the symptoms of iodis m are very rarely 2Q observed'in their administration. r

The process for prodiicing the new compounds which. possess the following general formula: G H I.CO.( alkyl consists in treating the monoiodin derivatives of high-molecular fatty acids with alcohols of the aliphatic series, such as methyl alcohol .ethyl alcohol etc. in the presence of strong acids. Under the termmonoi'o'diu derivatives oi 'high-molecular fatty acidsthose acids are generally understood which contain more than- I about 12 carbon atoms in their molecule, such as mono: iodo behenic acid (0 11 10 monoiodo stearic acid (C I-I JO alpha-monoiodo palrnitic acid C H JO -or the like. The alpha-monoiodo palmitic acid can be obtained by treating the alpha-bromo'palmitic acid i with sodium iodid. p I Y My new preparations arepartly crystallizable coniponnds and partly oils-. They mix readily withorganic solvents, as alcohol, benzene; ligroin, but not with watercandhre decomposed by treatment with a hot alcoholic solution of caustic potash.

,In order to producehny new substances, I can proceed as follows, the parts being by weight: 5 parts of monoiodo behe'nic acid are heated to boilihg with 15 parts of absolute alcohol and 1 part of concentrated sulfuric acid for about 4 hours in a reflux condenser. The mass shaken with ether which will extract the precipitated oil. The ethereal solution is then separated from the water, shaken with a; dilute solution of potassium car- 1 bonate to remove unchanged iodo behenic acid and several times washed with water. The ether is driven Specific ation of Letters Patent.

fication of the high-molecular monoiodo fatty acids, .which off and the residue being alight-yellow oil is dried in Patented Ju1y 2, 1907. 907. Serial in. 354,158.

some at 100? .v After cooling to 0 degree 0, the new ester solidifies. It can be purified by repeated crystallization from ligroini The new ester forms'white somewhat brilliant miscro'scopic'pris melting at 29 C. It contains 25,696 of iodin'(theory 25 It is almost odorless andtasteless and "practically insoluble in water and is saponified by heating'it with an alcoholic caustic potash solution, under the formation of hydroiodio aicd and isoerucic acid, having awmelting point of 57 degrees C. v The ether is formed according to the following equation:

G H I.GOO'H+C H OH= I C H, I .GO .O.G H5 +11 0.

The methyli'c ester is obtained in an analogous way The, ethylic ester of the monoiodostearic acid is a light-yellow pleasant smelling oil; The ethylic ester of .alpha-ipdo-palmitic acid is a light reddish-yellow oil of a peculiar odor. The esterification is carried out in an analogous or-in any other known manner, if other monoiodo' high-molecular fatty acids or other alcohols etc.beused. a Having now described inventio'h and in what manner the same is 'tol be performed, what I claim as newvanddesireto secure by Letters Patentis:.

. 1. The herein-described alkyl-esters -of- -tl1e monoiodin derivatives of high molecular fatty acids of the' following general formula: CuH nI.-C0.O.,alkyl, obtainable by esteriesters ai'e p1'ac.tically insoluble 'mwaler and soluble in 'benz'ene alcohol and lig roin, being decomposed hy treatinent with a hot alcoholic potash solution unde ritheformation of hydroiodic acid. and being valuable remedies, substantiallyflas 'Ilsc).'il ed. v l

2.. The hereimdescribed new alkyl-esters oi the monoiodo hehenic acid ,of the general ,formula: C H LC0.O. :ilkyl, obtainable by the esterification of 'monoiodo behenic' acid, which esters are practically insoluble in -water. and soluble in benzene, .alcohol and ligroiin-belrig decomposed by treatment with a hot-alcoholic potash solution under theiormation of hydroiodic acid and isoerucic magma being valuable remedies, substantially as -described.

3. The herein-describednew eth ylic ster of. mon'olodo behenic acid of the formula: C lI L'CilQC iI obtainnblc bytreating monoiodo belienic'acidavith ethyl alcohol and sulfuric acid, which forms white microscopic prisms. melting at :19 degrees C., being almosttasteless and odorless. being saponified by the action of a hot alcoholic caustic potash solution under the formation of hydi'oiodic acid and isoerucic acid, and being a valuable remedy, Sill)- stunliully as described.

In testimony whereof I have hereuntov set my hand in I the presence of two subscribing. witnesses.

' EMIL FlSl'flllill.

Witnesses \VoLD'K'arAn "Hinr'r, HENRI HAsPnn. 

